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LED street lamps electronic systems
Lighting Orient provides town officials with a practical choice when lighting almost rural LED panel. The basic design offered by Lighting Orient is the single-sided, industrial-strength street lamp. The light has one lamp head that faces the street, unlike the two-sided headboards of the Shenzhen. The light itself is made as an LED device that is programmed to the specs the town has chosen. Solar LED street Light come in a wide range of styles and sizes. Most conventional street lights use halogen bulbs, which are similar in function and appearance to household incandescent bulbs. These bulbs consist of a vacuum tube with a filament inside and an inert gas (such as halogen) that causes the burned portion of the filament to recollect on the filament wire, extending the life of the bulb. Metal halide bulbs employ similar technology but use even less energy and produce more light. LED street lights include heat exchangers to regulate temperature. These devices moderate the heat that an electrical current produces as it powers the LED. Heat exchangers use the passage of air over a series of fins to keep the lighting element cool and to make sure that the LED is able to produce even light without darker areas or "hot spots" that might otherwise occur. LED street lights are the new standard for replacing high pressure sodium heads (as of 2011). The solar street light systems can be dimmed or brightened to different light levels. There are a lot of possibilities for these new systems to control the amount of lighting according to the needs of the area being lit. Pattern standards are set by the Illuminating Engineering Society to help prevent light from being wasted. New advancements in LED light technology have lowered the amount of LED lights in a street lamp fixture. This results in meeting roadway pattern specifications.
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How to improve energy efficiency
LED street light is sent through high-intensity discharge lamps. A high-intensity discharge lamp emits light by an arc of electricity created between two electrodes. The electrodes are in a transparent tube filled with gas and metal salts. The electrical arc generates heat, which works with the gas and metal to create light-emitting plasma. Another tip for how to improve your energy efficiency is to install LED, or light emitting diode, lights into our street lamps. This method of lighting our streets can take many incarnations. There are five types currently being employed: the integral, retrofit, solar, high pole, and tunnel street lights. The LED street lights are expected to maintain 50,000 hours of life between bulbs. They also are rated to save as much as 75 percent of the energy that traditional bulbs use. GE offers the Syra street light tool for use in a variety of street settings, such as boardwalks and pedestrian areas. The solution comes in two different sizes, depending on a LED lighting output of 50 to 250 watts. Another street lighting tool includes the GE LED Area Lighter that has a life of 50,000 hours. The lights mount in place with a pole arm and output up to 189 watts. Enertia Engineering develops and makes solar-powered LED street light. Unlike the traditional street light solutions, EnerSolar street lights do not need electricity, wiring and a trench to work. The solar-power light installs in a parking lot and hangs from a pole or can be set up on a building. The EnerSolar street light measures 25.2 inches by 25.7 inches by 10 inches and weighs 30 lbs. Solar street lights provide a high level of brightness and efficiency in addition to their long life and lack of conventional energy consumption. They are also fairly easy to install. These types of LED street light are typically used in industrial parks, scenic areas, urban and district roads, many pedestrian streets and in many parking lots.
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LED brought life
If you love party or Christmas lights,LED lights?may be just the thing for you. They come in all sizes, colors and shapes; they illuminate brightly while using much less energy than old-fashioned twinkle or Christmas bulb lights; most are impervious to weather; and they are cool to the touch - making them a safer alternative to traditional lights. In addition, you can purchase LEDs in strands or singles, and rig them together in creative ways. Most are battery operated, saving the hassle and danger of stringing extension cords toelectrical outlets.
1.Measure the space where you will hang the LED lights.
2.Determine whether?LED light?strands will run straight across, dip for a swag effect or wind around - as on a tree or post.
3.Use the exact total measurement plus a few inches to determine the number of strands you need for straight runs.
4.Multiply the number of inches straight across the area to be lit by 1 1/2 to 3 times to form swags. The greater the multiplier, the more depth you will have in the swag.
5.Calculate the maximum circumference of trees or posts by multiplying the diameter of the structure by 3.14. Use that number multiplied by the number of times you want to wrap the lights around, to figure the total length - or number of light strands - you need. Add a few feet for good measure.
6.Measure the distance from an electrical source for plug-in lights, and add that distance to the total number of inches needed. Omit this step for battery-powered LED strands.
7.Use heavy staples over the strands -- being very careful to avoid penetrating the wires -- for a quick, secure mount to wooden surfaces. Alternatively, screw cup-hooks to wood, and lay strands across those, using twist-ties to hold the wire securely at each junction to eliminate sags and prevent wires coming unfastened.
8.Attach wires to smooth metal or glass surfaces with suction-mounted hooks.
9.Wrap strands without fasteners around posts or trees starting around the bottom and wrapping tightly. Use occasional zip ties, string or wire around tree or post if necessary to secure the strands, especially where more than one strand connects, and at branches from the main trunk of trees. Use plastic "tree clips" to fasten lights at ends of small branches for a floating effect.
10.Hang lights from structures with a lip, such as a gutter, using small "S" hooks or specially designed "gutter hooks."
11.Use picture hangers or clear, plastic adhesive-backed clips on indoor walls, door frames or cabinets to fasten strands securely with little or no damage to surfaces.
12.Employ special "shingle clips" of metal or plastic to fasten lights on roofs.
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LED energy efficiency
Energy efficiency is an imperative part of the initiative toward a greener and more stable environment. Many households and businesses have made the switch to LED (light-emitting diode) light bulbs to decrease their energy use and monthly electrical costs. High quality?LED light?bulbs have an average life expectancy of 50,000 hours, while the life expectancy of an incandescent bulb is only about 1,200 hours and compact florescent (CFL) bulbs last for about 8,000 hours. Unlike CFL bulbs,?LED bulbs?don’t contain mercury, so recycling them is easier and safer.
Instructions
Contact your local recycling center and ask if they have special?LED bulb?restrictions. Because LED bulbs don’t contain mercury and aren’t considered a hazardous material, they may be safely recycled, but each recycling center may have their own protocols.
Package burned out LED bulbs safely and ship them to LED Light Bulb Recycling (link in resources).
Return burned out LED light bulbs to the hardware store or online company you purchased them from if that company has a recycling or replacement program. Because LED light bulbs are expensive, many companies, like Ikea have on-site recycling programs that allow customers to bring their used bulbs and batteries to their local store so the store can recycle.
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LED light emitting diode
The LED light emitting diode, is a solid state semiconductor devices, which can be converted directly into electricity for light. The heart of the LED is a semiconductor wafer, light emitting diodes
One end of the chip attached to a bracket, one end is negative, the other end to connect the positive power supply, so that the entire chip to be epoxy encapsulated. The semiconductor chip consists of two parts, the part of the P-type semiconductor, the dominant hole in it, the other end of the N-type semiconductor, here is mainly electronic. But when two semiconductor connected to form a PN junction between them. When the current through the wire to the chip, the electrons would be pushed to the P region in the P region electron-hole recombination, and then will be issued in the form of photon energy, which is the principle of LED tube. The wavelength of light is the color of light is determined by the material to form a PN junction. The initial LED as the light of the instructions of the instrumentation, then a variety of light-colored LEDs in traffic lights and a large area display a wide range of applications, resulting in a good economic and social benefits. To 12 inches of red traffic lights, for example, in the United States was long-lived, low-efficiency 140-watt incandescent lamp as a light source, it produces 2000 lumens of white light. The red filter, the light loss of 90%, leaving only 200 lumens of red light. In the light of the new design, Lumileds uses 18 red LED light source, including circuit losses, the total power consumption of 14 watts to produce the same luminous efficiency. The car lights are also an important area of ??the LED light source applications.
For general lighting, people need a white light source. 1998 white light LED development. The LED is packaged together to make the GaN chip and yttrium aluminum garnet (YAG). GaN chip of blue (λp = 465nm yellow light shot Wd = 30nm), high-temperature sintering of YAG phosphors with Ce3 + by blue excitation peak 550nm. Blue spot light substrate is installed in the reflective cavity bowl, covered with a mixture of YAG thin layer of resin, about 200-500nm. issued by the blue part was absorbed by the phosphor, another part of the Blu-ray phosphors emit yellow mixed, can be too white. InGaN / YAG white LED by changing the YAG phosphor chemical composition and to adjust the thickness of the phosphor layer can be colored white color temperature 3500-10000K. This blue LED is white, simple structure, low cost, mature technology and high, so the use of up to
60s of last century, scientists use light-emitting principle of semiconductor PN junction, development became a? diodes. The development of the LED, the materials used GaASP its luminous color is red. After nearly 30 years of development, and now very familiar with the LED, can emit red, orange, yellow, green, blue shade. However, the white light LED lighting required only developed in recent years to introduce readers to the lighting, white LED.
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LED day to day knowledge
Recently, GE Lighting, several sets of new LED street light in New Zealand for the local has a long history of Wang Jia Nuyi bridge upgrade traditional lighting systems. Wang Jia Nuyi River is the third largest river in New Zealand has a special significance in Maori culture, and Wang Jia Nuyi Bridge is the only one of several road and bridge rivers.
In order to improve the lighting conditions in Wang Jia Nuyi bridge main road, the City Council began to try to replace the traditional lighting technology, with different LED light source aimed at the application of energy-saving program. The new road lighting solution must maintain the same brightness as with conventional light sources have to meet the requirements of energy efficiency savings. Local lighting design company in New Zealand EvolveNZ GE Lighting of the 80WR150LED products.
Today, Wang Jia Nuyi Bridge on 14 sets of new GE LED lamps at night is a new look, this reform, Wang Jia Nuyi City Council to save up to NZ $ 9,000 (RMB46, 620), electricity and maintenance costs.
Compared with traditional sodium lamp Wang Jia Nuyi bridge before, GELED product advantages:
Energy saving: from 165W to 80W
Each LED light is only 80 watts of power (less than a home, the power of 100 watt light bulb). Than the original use of sodium lamps saving 52% energy consumption. New lighting direct rays of light area, while the glare reduced to below 5%. Therefore, the use of new lighting products will not cause the top of the leaked, thereby reducing waste.
(2) reduce maintenance time
LED flood lights life is more permanent than the sodium lamp can last 12-15 years. At the same time period, the sodium lamp fittings may need to be replaced 3-4 times.
(3) to improve the light output
LED to generate white light makes night driving more comfortable; real light color effect, so that the drive line of sight is clearer. In addition, improved color security cameras better play efficacy.
Mr. EvolveNZ company general manager JohnBirks said: "The lighting configuration to restore the natural light to bring a more secure feeling and a white spot light makes the space more modern and dynamic sense of the night, can more clearly see the real life environment We hope that this lighting technology to attract more people to travel, to experience the night scenery of their host cities. "
Wang Jia Nuyi City Council infrastructure and assets Chairman of the Committee RayStevens said: "The new alternative can bring many potential advantages and benefits to the public, no doubt, members of the public will notice the new LED light to generate white light, rather than issued by the installation of sodium orange light. Wang Jia Nuyi City Council will gradually adopt the LED light source instead of the traditional lighting products, until completely replace it. "
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The development of LED energy saving lamps
As a revolutionary green energy-saving lamps,LED light, changing the previous energy-saving lamps contain heavy metal toxins, pollution problems, and much longer service life characteristics of the next generation of mainstream lighting products, but more expensive, few people interested.
In our view, the same power, namely, the wattage is the same energy-efficient light than ordinary energy-saving lamps brighter. In theory, the ordinary energy-saving lamp life of approximately 5000 hours, indoor life of up to 50,000 hours. In theory, the calculation of electricity per day 5 hours, it’s life up to 27 years.
Normal wear and tear and glow the same premise, can choose the ordinary energy-saving in straight fluorescent lamps (15W) and equal to its glow LED lamps (9W). At present, an energy-saving lamps sell for about 50 yuan, the LED lamp is priced at 200 yuan. 50,000 hours of work time and residents of Harbin City, electricity (0.51 yuan / kWh) calculated the electricity of ordinary energy-saving lamps to 382.5 yuan (15 watts x 50000 hours) / 1000 × 0.51 = 382.5; the LED lights with The power cost of 229.5 yuan (9 watts x 50,000 hours) / 1000 × 0.51 = 229.5. In 50,000 hours of testing, however, ordinary energy-saving lamps, 10 lamps need to be replaced. Assume that a $ 50 general energy-saving lamps, including lamps fee of 25 yuan and 25 yuan lamp fee, then ignited the 50,000 hours cost $ 275 (25 × 10 tube +25 $ = 275); and lit 50,000 hours LED light only need one, cost about 200 yuan. Ordinary energy-saving lamps lit simultaneously by 50,000 hours, spent 657.5 yuan, LED lights, compared with 429.5 yuan. Seen in this light, an LED light than ordinary energy-saving lamps save 228 yuan. Each room lights total, the cost of the savings will be doubled.
What causes the high price of LED lights? Some three points:
Cooling and reasonable cost of design
Would account for about 20 percent in the structural design of the lighting in industrious people will have been priced very low, 20% of the cost very reasonable, the biggest problem is how to be more innovative, the design is more reasonable.
Cooling costs to be maintained at 5%, the actual thermal design is very simple and protect the two directions: First, the LED tube and the external heat sink paths as short as possible, the shorter the better your thermal design; heat resistance is sufficient heat reached the path must also have the ’cooling-road’. this part of the cost structure is not much used in cooling costs.
Core technology is the high cost of
led industry upstream of most of the core patent is in foreign hands, we do not grasp the core technology, although the manufacturing capacity of LED application products accounted for 50% of the global share to 50 percent, but the profit is indeed one of the lowest .
LED chip with the process, increase in the number of larger wafer production process, will continue to reduce costs, reduce the rate of 20% annually in recent years, the price factor of the LED chip to light efficiency enhancement also included in the price reduction the same price to buy a better product. The cost of LED lighting in the LED chip, chip price down of LED flood light Price dropped of at this stage of energy-saving lamps, interior lighting, natural everywhere. LED chip is still a great room for price cuts.
Power cost is seriously lagging behind
The power LED lighting is the weakest link, is seriously lagging behind the development of led lamps, quality needs to be improved. Design accounted for about 20% of the cost of lamps, some as high. As the technology development of power in about 5-10% of the most reasonable.
LED costs are high compared with other light, as in the 1990s before the invention of blue LED, the LED downlight industry, leading to the white LED can be achieved, in fact, now the cost is not high. LED environmental protection, energy saving, no mercury, and every quarter of the price of LED lamps are sliding down, I believe we can achieve the acceptable level within a short period of time.
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